Improvement in operating boiler-brooms



A. C. COCK. Operating Boiler-Brooms.

Patented May 28; I878.

INVENTOR:

I. PETERS FHUTILUTHOGRAFNER. WASHINGTON. D. C.

UNITED STATES PATENT OFFICE.

ANDREW O. COCK, OF ST. LOUIS, MISSOURI.

IMPROVEMENT IN OPERATING B OlLE R -BROOMS.

Specification forming part of Letters Patent No. 204,200, dated May28,1878; application filed February 16, 1876.

"otherwise, by which a broom is made to traverse the bottom of theboiler from one end to the other, which result may be accomplished whilegenerating or having steam up, or may at any time sweep the accumulatedmud, sediment, or scale into the mud-receivers, and

' thereby prevent the burning of the shells of a steam-boiler. Saidsediment settles on the sheet between the water and the fire.-

My invention consists in the arrangement inside of the boiler by whichan endless chain passes around suitablygrooved pulleys secured tothe-boiler-heads, the broom being at tached to the chain, and operatedby bevelgear and shaft-connections with mechanism outside of the boiler.

In the accompanying drawings, in which similar letters indicate likeparts, Figure 1 is a longitudinal section of a steam-boiler embodying myinvention. Fig. 2 is a detail perspective view of the bevel-and-chainwheel. Fig. 3 is a detail perspective view of the manner in which thechain attachments are made with the broom attached.

A is an endless chain, which passes around grooved pulleys B O, carryingbroom D, said broom being made to correspond with, and fitting thebottom of, the boiler. dd (1, Fig.3, are stay-chains, to prevent anyside movement or swing of the broom. Grooved pulley O is provided withbevel-gear c, which meshes into and is driven by bevel-pinion 6,attached to shaft E, passing through stuffing-box F, and having anouter-end hand-crank, G, by which the gear is operated.

When the apparatus is to be operated, the bevel-gear is turned by thehand-crank, or by any approved mechanism, which puts in motion thechain, and thereby the brush D, traveling from one end of the boiler tothe other. Two or more of these brushes may be attached to the chain;but one will answer every purpose. When the brush arrives at the end ofthe boiler the gear-Wheel is reversed. Then the brush is made to travelin the opposite direction. The same movement may be again repeated untilthe boiler is thought tobe entirely clear of mud and sediment.

Ready access may be had to the inside of the boiler by means of theusual man-hole.

There may be changes in the position of bevel-gear and of the shaft,made necessary in some instances, as in five-fined boilers and otherswhere the spaces between the flues vary. Such changes will not alter themechanism of the chain and broom.

In cases where boilers are so constructed as to admit of a chain, Idesire to leave out grooved pulley B in forward end of the boiler andsubstitute bevel-and-chain wheel 0 c, with shaft E lengthened to suit;or by running shaft E in a horizontal position through the boilerhead,(with bevel-gear the same,) and stuffingbox F placed on outside ofboiler-head, instead of as represented in. drawing; or by'dispensingwith bevel-wheel and bevel-pinion c and e, placing stuffing-box F on theside of the boiler,

and running shaft E through center of chainwhcel O, and keyed thereon.

I am aware that itis not new to use brushes or scrapers for cleanin gsteam-boilers, or mechanism for operating them, and do not claim suchbroadly; but

What I do claim, and desire to secure by Letters Patent, is- 7 1. Thecombination of the endless chain A, passing over grooved pulleys B B andtoothed wheel 0, attached tothe boiler-heads, and

chain attachments d d with the broom D, arranged to be adapted toboilers having two or more flues, substantially as set forth anddescribed.

2. The combination of the endless chain A with broom D, guide-pulleys BO, bevel-wheel I c e, and crank-shaft E, constructed and operatingsubstantially as and for the purpose set forth. I

- ANDREW G. COOK.

Attest:

JOHN N. MASON, W. BRAITHWAITE.

